The earliest time for both external ankle and posterior ankle fracture is about 3 months to recover to the pre-injury functional status of the joint or the whole lower limb, but the slower one needs more than half a year, which usually has to be decided according to the severity of the injury, the growth of the fracture, and whether the patient is able to actively move the functional exercise later on. If the fracture after the formal treatment, and the fracture also grows faster, usually about 6-8 weeks time can be removed from the external fixation, do the ankle joint activities and functional exercise, or to give the weight-bearing walking on the ground functional exercise. If the active late functional exercise, exercise 1-1.5 months or so, the function has been fully restored, this time has been determined that the lower limb fracture has been completely well, so the total time will take as soon as 3 months. However, if the middle-aged and elderly people, the growth of the fracture is relatively slow, or after the fracture is well, the lack of active activities in the late functional exercise, the muscles of the lower limb and the ankle joint activity function is not able to recover quickly, this time the time to get well is relatively slow, or slower than half a year.